metanephros

[ met-uh-nef-ros ]

noun

, Embryology.

, plural met·a·neph·roi [met-, uh, -, nef, -roi].

1. one of the three embryonic excretory organs of higher vertebrates, becoming the permanent and functional kidney.

metanephros

/ ˌmɛtəˈnɛfrɒs /

noun

1. the last-formed posterior part of the embryonic kidney in reptiles, birds, and mammals, which remains functional in the adult See also pronephros mesonephros

Other Words From

• meta·nephric adjective

Word History and Origins

Origin of metanephros¹

1875–80; < New Latin < Greek meta- meta- + nephrós kidney

Word History and Origins

Origin of metanephros¹

C19: New Latin, from meta- + Greek nephros kidney

Example Sentences

The more complete replacements, such as the nephridia of the genital segment of Tubifex by a subsequently formed genital duct, may be compared with the succession of the nesonephros to the pronephros in vertebrates, and of the metanephros to the mesonephros in the higher vertebrates.

From Project Gutenberg

Mt. and Mt.d., the metanephros and metanephric duct, become the functional kidney and ureter in both sexes.

From Project Gutenberg

Metanephros and duct, not clearly marked off from Mesonephros.

From Project Gutenberg

Mesonephros and Metanephros, the kidney, and their unseparated ducts, the ureters.

From Project Gutenberg